httpv://youtu.be/Bc01Dbukka4
video: soil remains intact when bulls till the ground
“Soil compaction is a common and constant problem on most farms that till the soil. Heavy farm machinery can create persistent subsoil compaction which can result in restricted root growth, poor root zone aeration, and poor drainage.
This fact sheet, produced by NCR-SARE Graduate Student Grant recipient, James Hoorman, discusses how soil porosity, water infiltration, soil aeration, and soil structure increase under natural vegetation and no-till systems with continuous living cover.”
Online version (PDF 1 MB)
http://www.northcentralsare.org/State-Programs/Ohio/State-News-and-Activities/The-Biology-of-Soil-Compaction
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